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Cosmos is a book by Carl Sagan. Written to accompany Cosmos' original television series, Cosmos A Personal Voyage, its thirteen illustrated chapters correspond to the thirteen episodes. It was first published by Random House in 1980. A sequel was published in 1994.

It spent seventy weeks on the New York Times bestseller list to become the best-selling science book ever published at the time. It received the Hugo Award for Best Non-Fiction Book in 1981.


  • Introduction
  1. The Shores of the Cosmic Ocean
  2. One Voice in the Cosmic Fugue
  3. The Harmony of Worlds
  4. Heaven and Hell
  5. Blues for a Red Planet
  6. Travelers' Tales
  7. The Backbone of Night
  8. Travels in Space and Time
  9. The Lives of the Stars
  10. The Edge of Forever
  11. The Persistence of Memory
  12. Encyclopaedia Galactica
  13. Who Speaks for Earth?
  • Appendix 1: Reductio ad Absurdum and the Square Root of Two
  • Appendix 2: The Five Pythagorean Solids
  • For Further Reading
  • Index